Oh Se-jong (Hangul: ???, Hanja: ???) (9 October 1982 – 27 June 2016) was a South Korean short track speed skater who won gold in the 5000 m relay at the 2006 Winter Olympics in Turin.
He also competed in 5000 m relay at the 2002 Winter Olympics in Salt Lake City.
He died in a traffic accident on 27 June 2016 in Seoul, South Korea.